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iPhone camera lens covers use sapphire, making them highly scratch resistant and scratches unlikely to affect image quality
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The iPhone's camera lens covers are made of sapphire, which is far more scratch-resistant than glass, and any scratches that do occur have negligible impact on image quality.
Engineers can rely on the sapphire lens covers to keep image quality intact without adding extra protective layers, simplifying the design of rear-camera accessories. Because scratches on the cover are unlikely to affect photos and the material is more prone to shattering than scratching under extreme force, teams can prioritize resistance to fracture rather than surface wear.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
The exposed iPhone camera lens covers are made of sapphire, not glass.
Sapphire makes these covers highly scratch resistant, as shown by razor-blade tests that produced no effect.
Even if a scratch occurs, it almost certainly does not degrade image quality because light is focused on the sensor, not the lens surface.
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